TREATMENT METHOD OF DYE WASTEWATER BY ANAEROBIC-AEROBIC-COHESIVE PROCESS

摘要

PURPOSE: A method for treating the dye wastewater is provided, to improve the treatment efficiency and to reduce the processing cost. CONSTITUTION: The method comprises the steps of neutralizing the dye wastewater in a neutralization tank(100); degrading the hardly-degrading material contained in the dye wastewater by using an anaerobic bacteria in an anaerobic tank(200); treating it by using an aerobic bacteria in an aerobic tank(300); carrying out the agglutination process by using a cationic organic agglutinating agent in an agglutination bath(400); and separating a sedimented precipitate and final treatment water in a precipitation tank(500) and exhausting them. Preferably the cationic organic agglutinating agent is a cyanoguanidine-formaldehyde polymer which is obtained by condensing formaldehyde, cyanoguanidine and ammonium chloride.